An Egyptian man casts his vote in a ballot box at a polling station in a referendum on a disputed constitution drafted by Islamist supporters of President Mohammed Morsi in Cairo, Egypt, Saturday, Dec. 15, 2012. Egyptians were voting on Saturday on a proposed constitution that has polarized their nation, with Morsi and his Islamist supporters backing the charter, while liberals, moderate Muslims and Christians oppose it. (AP Photo/Nasser Nasser)